BD682 STMicroelectronics Transistor BJT PNP (Transistor Outline, Vertical) In Stock
The BD682 is a PNP Darlington transistor from STMicroelectronics with a built-in freewheeling diode and biasing resistors for simplified circuit design. It features 4A collector current, 100V collector-emitter voltage, and minimum DC current gain (hFE) of 750. Available in isolated TO-126 3-pin package for motor drive and power switching applications worldwide.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- BD682 Datasheet PDF
- Category
- Transistor BJT PNP
- Price
- From $0.1888(MOQ 1)
- Temp Range
- ?°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Darlington configuration with built-in diode and resistor reduces external component count for simpler motor and relay driver circuits
- High DC current gain minimum of 750 hFE enables control of 4A loads from low-level microcontroller or logic signals
- 100V collector-emitter breakdown voltage provides robust performance in inductive load switching with load transient protection
- Isolated TO-126 3-pin package with SOT-32 body allows easy heatsinking for thermal management in power applications
Applications
The BD682 is widely used in motor control circuits, relay drivers, solenoid drivers, and DC load switching applications where a high-gain PNP transistor is needed to interface low-level control signals with higher power loads. Its built-in freewheeling diode and biasing resistors simplify the design of inductive load drivers in industrial control, home appliances, and power electronics. The device is also used in audio amplifier output stages and linear power regulators where high current gain and 100V voltage rating are beneficial.
Specifications
| Factory Lead Time | 14Weeks |
| YTEOL | 9 |
| Case Connection | ISOLATED |
| Collector Current-Max (IC) | 4A |
| Collector-Emitter Voltage-Max | 100V |
| Configuration | DARLINGTON WITH BUILT-IN DIODE AND RESISTOR |
| DC Current Gain-Min (hFE) | 750 |
| JEDEC-95 Code | TO-126 |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Polarity/Channel Type | PNP |
| Power Dissipation Ambient-Max | 40W |
| Power Dissipation-Max (Abs) | 40W |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Transition Frequency-Nom (fT) | 10MHz |
| VCEsat-Max | 2.5V |
| ## BD682 Alternates Showing results | Image |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.29.00.95 |
| Country of Origin | India |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for BD682:
suggested
Frequently Asked Questions
What is the maximum collector current and voltage of the BD682?
The BD682 has a maximum collector current (IC) of 4A and a maximum collector-emitter voltage (VCEO) of 100V. These ratings make it suitable for driving medium-power loads such as motors, relays, and solenoids in automotive, industrial, and consumer electronics applications where PNP Darlington transistors are preferred.
Does the BD682 include internal components, and what are they?
Yes, the BD682 integrates a built-in freewheeling diode and biasing resistors in a single Darlington transistor package. The built-in diode protects against inductive kickback when switching motor or relay loads, while the biasing resistors simplify base drive circuit design by eliminating the need for external discrete resistors.
What package does the BD682 use and how can it be heatsinked?
The BD682 is housed in a 3-pin TO-126 (SOT-32) package with an isolated case connection, identified by JEDEC-95 code TO-126 and JESD-30 code R-PSFM-T3. The isolated case allows the device to be mounted directly to a heatsink without an insulating washer, simplifying thermal management in power switching circuits requiring heat dissipation.
What is the minimum hFE of the BD682 and why does it matter?
The BD682 has a minimum DC current gain (hFE) of 750, which is characteristic of its Darlington transistor configuration. This high gain means a very small base current can control the full 4A collector current, allowing direct interfacing with microcontroller I/O pins or logic-level signals without additional driver stages, simplifying overall circuit design.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.1200 | $3.12 |
| 10+ | $0.6000 | $6.00 |
| 100+ | $0.4600 | $46.00 |
| 500+ | $0.3410 | $170.48 |
| 1000+ | $0.2700 | $270.00 |
| 2000+ | $0.1888 | $377.60 |
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